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  • Overview
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  1. API
  2. MODELS
  3. VISION MODELS

DiT

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Last updated 1 year ago

DiT

Overview

DiT was proposed in by Junlong Li, Yiheng Xu, Tengchao Lv, Lei Cui, Cha Zhang, Furu Wei. DiT applies the self-supervised objective of (BERT pre-training of Image Transformers) to 42 million document images, allowing for state-of-the-art results on tasks including:

  • document image classification: the dataset (a collection of 400,000 images belonging to one of 16 classes).

  • document layout analysis: the dataset (a collection of more than 360,000 document images constructed by automatically parsing PubMed XML files).

  • table detection: the dataset (a collection of 600 training images and 240 testing images).

The abstract from the paper is the following:

Image Transformer has recently achieved significant progress for natural image understanding, either using supervised (ViT, DeiT, etc.) or self-supervised (BEiT, MAE, etc.) pre-training techniques. In this paper, we propose DiT, a self-supervised pre-trained Document Image Transformer model using large-scale unlabeled text images for Document AI tasks, which is essential since no supervised counterparts ever exist due to the lack of human labeled document images. We leverage DiT as the backbone network in a variety of vision-based Document AI tasks, including document image classification, document layout analysis, as well as table detection. Experiment results have illustrated that the self-supervised pre-trained DiT model achieves new state-of-the-art results on these downstream tasks, e.g. document image classification (91.11 β†’ 92.69), document layout analysis (91.0 β†’ 94.9) and table detection (94.23 β†’ 96.55).

Summary of the approach. Taken from the [original paper](https://arxiv.org/abs/2203.02378).

One can directly use the weights of DiT with the AutoModel API:

Copied

from transformers import AutoModel

model = AutoModel.from_pretrained("microsoft/dit-base")

This will load the model pre-trained on masked image modeling. Note that this won’t include the language modeling head on top, used to predict visual tokens.

To include the head, you can load the weights into a BeitForMaskedImageModeling model, like so:

Copied

from transformers import BeitForMaskedImageModeling

model = BeitForMaskedImageModeling.from_pretrained("microsoft/dit-base")

Copied

from transformers import AutoModelForImageClassification

model = AutoModelForImageClassification.from_pretrained("microsoft/dit-base-finetuned-rvlcdip")

Resources

A list of official BOINC AI and community (indicated by 🌎) resources to help you get started with DiT.

Image Classification

If you’re interested in submitting a resource to be included here, please feel free to open a Pull Request and we’ll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.

You can also load a fine-tuned model from the , like so:

This particular checkpoint was fine-tuned on , an important benchmark for document image classification. A notebook that illustrates inference for document image classification can be found .

As DiT’s architecture is equivalent to that of BEiT, one can refer to for all tips, code examples and notebooks.

This model was contributed by . The original code can be found .

is supported by this and .

🌍
🌍
🌍
hub
RVL-CDIP
here
BEiT’s documentation page
nielsr
here
BeitForImageClassification
example script
notebook
DiT: Self-supervised Pre-training for Document Image Transformer
BEiT
RVL-CDIP
PubLayNet
ICDAR 2019 cTDaR